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Diastereoselective desymmetrization of diarylphosphinous acid-borane amides under Birch reduction

06-Jan-2015 | Marek Stankevič, Organic & Biomolecular Chemistry, 2015

Treatment of diarylphosphinous acid-borane amides possessing chiral amido functionality with an alkali metal solution in liquid ammonia induced a preferential dearomatization of one aryl substituent at phosphorus leading to the formation of non-equimolar amounts of diastereomers. ...

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Characterization and biotransformation in the plasma and red blood cells of VIVO2+ complexes formed by ceftriaxone

04-Jan-2015 | Author(s): Daniele Sanna , Davide Fabbri , Maria Serra , Péter Buglyó , Linda Bíró , Valeria Ugone , Giovanni ..., Journal of Inorganic Biochemistry, 2015

Publication date: Available online 29 December 2014 Source:Journal of Inorganic Biochemistry Author(s): Daniele Sanna , Davide Fabbri , Maria Serra , Péter Buglyó , Linda Bíró , Valeria Ugone , Giovanni Micera , Eugenio Garribba The coordination mode and geometry in aqueous solution ...

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Co-Micellization Behavior in Poloxamers: Dissipative Particle Dynamics Study

31-Dec-2014 | Ammu Prhashanna; Saif A. Khan; Shing Bor Chen, Journal of Physical Chemistry B, 2014

Dissipative particle dynamics simulations are applied to investigate co-micellization behavior for binary mixtures of Poloxamers in dilute aqueous solution. In view of block length similarity/dissimilarity, four representative mixture cases are considered: F127/P123, F127/P105, P123/P84, and ...

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The peculiar behavior of Picha in the formation of metallacrown complexes with Cu(II), Ni(II) and Zn(II) in aqueous solution

30-Dec-2014 | Luciano Marchiò; Nicola Marchetti; Corrado Atzeri; Valentina Borghesani; Maurizio Remelli; Matteo Tegoni, Dalton Transactions, 2014

The thermodynamic stability of the metallacrown complexes formed by picolinehydroxamic acid (Picha) with Cu(II), Ni(II) and Zn(II) in aqueous solution has been determined by potentiometry, and the speciation models validated by ESI-MS and UV-visible spectrophotometry. Cu(II) and Zn(II) form ...

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Alkali-metal ion coordination in uranyl(VI) poly-peroxide complexes in solution. Part 1: the Li+, Na+ and K+ – peroxide–hydroxide systems

30-Dec-2014 | Pier Luigi Zanonato; Plinio Di Bernardo; Valerie Vallet; Zoltán Szabó; Ingmar Grenthe, Dalton Transactions, 2014

The alkali metal ions Li+, Na+ and K+ have a profound influence on the stoichiometry of the complexes formed in uranyl(vi)–peroxide–hydroxide systems, presumably as a result of a templating effect, resulting in the formation of two complexes, M[(UO2)(O2)(OH)]2− where the uranyl units are linked ...

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Novel ‘Anti-Prussian Blue’ Structure Based on Zn2+ Nodes and [Re3Mo3S8(CN)6]6– Heterometallic Cluster Spacers and its Rearrangement to Prussian Blue

30-Dec-2014 | Alexander Viktorovich Virovets; Yakov M. Gayfulin; Eugenia V. Presypkina; Yuri V. Mironov; Nikolay G. Naumov, CrystEngComm, 2014

The reaction between ZnCl2 and aqueous solution of CaK4[Re3Mo3S8(CN)6]•8H2O is controlled by the concentration of NH3. High concentration of NH3 favors the formation of [Zn(NH3)4]8{Zn[Re3Mo3S8(CN)6]3}•9H2O with an ideal primitive cubic 3D network of Zn2+ cations joint by cyanocluster anions as ...

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Bicomponent H-Bonded Porous Molecular Networks at the Liquid–Solid Interface: What Is the Influence of Preorganization in Solution?

29-Dec-2014 | Tibor Kudernac; Amal Kumar Mandal; Jurriaan Huskens, Langmuir, 2014

Tailoring the architecture of porous two-dimensional networks formed by molecules is essential for developing functional materials with low dimensionality. Here we present bicomponent porous networks with tunable pore-sizes that were formed by self-assembly of hydrogen-bonding molecules at the ...

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Emulsion PCR Significantly Improves Nonequilibrium Capillary Electrophoresis of Equilibrium Mixtures-Based Aptamer Selection: Allowing for Efficient and Rapid Selection of Aptamer to Unmodified ABH2 Protein

29-Dec-2014 | Roman Yufa; Svetlana M. Krylova; Christine Bruce; Eleanor A. Bagg; Christopher J. Schofield; Sergey N. Krylov, Analytical Chemistry, 2014

Nonequilibrium capillary electrophoresis of equilibrium mixtures (NECEEM), a homogeneous approach to select DNA aptamers, is among the most efficient partitioning techniques. In contrast with surface-based systematic evolution of ligands by exponential enrichment (SELEX) approaches, the ability ...

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Ultrafast Hydrolysis of a Lewis Photoacid

29-Dec-2014 | Joseph D. Henrich; Scott Suchyta; Bern Kohler, Journal of Physical Chemistry B, 2014

This study explores the concept that electronic excitation can dramatically enhance Lewis acidity. Specifically, it is shown that photoexcitation transforms an electron-deficient organic compound of negligible Lewis acidity in its electronic ground state into a potent excited-state Lewis acid ...

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Solid-state and solution characterization of half-sandwich Ru(II) complexes with carboxylic ligands containing N-based coordinating functions

28-Dec-2014 | Author(s): Alessia Bacchi , Cecilia Loffi , Paolo Pagano , Paolo Pelagatti , Fabio Scè, Journal of Organometallic Chemistry, 2014

Publication date: 15 February 2015 Source:Journal of Organometallic Chemistry, Volume 778 Author(s): Alessia Bacchi , Cecilia Loffi , Paolo Pagano , Paolo Pelagatti , Fabio Scè The aminobenozic ligands 3-(4-aminophenyl)propionic acid (4APPA), 4-(4-aminophenyl)butyric acid (4APBA) and ...

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